Condensed cyclic compound and organic light-emitting device including the same

A condensed cyclic compound represented by Formula 1:

• where:
• X1 is O or S;
• each of L1 and L2 is independently selected from a substituted or unsubstituted C3-C10 cycloalkylene group, a substituted or unsubstituted C2-C10 heterocycloalkylene group, a substituted or unsubstituted C3-C10 cycloalkenylene group, a substituted or unsubstituted C2-C10 heterocycloalkenylene group, a substituted or unsubstituted C6-C60 arylene group, or a substituted or unsubstituted C2-C60 heteroarylene group;
• each of a1 and a2 is independently an integer from 0 to 3;
• each of Ar1 to Ar4 is independently selected from a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C2-C10 heterocycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C2-C10 heterocycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, or a substituted or unsubstituted C2-C60 heteroaryl group;
• each of R1 and R2 is independently selected from hydrogen, deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C2-C60 alkenyl group, a substituted or unsubstituted C2-C60 alkynyl group, a substituted or unsubstituted C1-C60 alkoxy group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C3-C10 heterocycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C3-C10 heterocycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C6-C60 arylthio group, a substituted or unsubstituted C2-C60 heteroaryl group, —Si(Q1)(Q2)(Q3) or —N(Q4)(Q5) where each of Q1 to Q5 is independently a C1-C60 alkyl group, a C1-C60 alkoxy group, a C6-C60 aryl group, or a C2-C60 heteroaryl group;
• b1 is an integer from 1 to 3;
• b1 is an integer from 1 to 5;
• and
• the substituted groups identified above include at least one substituent selected from:
• deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group;
• a substituted C1-C60 alkyl group, a substituted C2-C60 alkenyl group, a substituted C2-C60 alkynyl group, or a substituted C1-C60 alkoxy group, each substituted with at least one substituent selected from deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, or a phosphoric acid or a salt thereof;
• a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group;
• a substituted C3-C10 cycloalkyl group, a substituted C3-C10 heterocycloalkyl group, a substituted C3-C10 cycloalkenyl group, a substituted C3-C10 heterocycloalkenyl group, a substituted C6-C60 aryl group, a substituted C6-C60 aryloxy group, a substituted C6-C60 arylthio group, or a substituted C2-C60 heteroaryl group, where such substituted groups include at least one substituent selected from deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, or a C2-C60 heteroaryl group;
• —Si(Q11)(Q12)(Q13), or —N(Q14)(Q15), where each of Q11 to Q15 is independently selected from hydrogen, a C1-C60 alkyl group, a C1-C60 alkoxy group, a C6-C60 aryl group, or a C2-C60 heteroaryl group.